Question: What is the G-type main-sequence star for the parent astronomical body or Uranus?
Paraphrase: For the parent astronomical body or Uranus, what is the G - type main - sequence star
SPARQL (Wikidata):  select distinct ?obj where { wd:Q324 wdt:P397 ?obj . ?obj wdt:P31 wd:Q5864 } 
Answer: Sun